package com.dsh.guns.modular.system.util;
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import java.time.*;
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import java.time.format.DateTimeFormatter;
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import java.util.*;
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public class TimeUtil {
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private static final String DATE_FORMATTER_TIME = "yyyy-MM-dd HH:mm:ss";
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/**
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* 获取当天的00:00:00
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*
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* @return
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*/
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public static LocalDateTime getDayStart(LocalDateTime time) {
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return time.with(LocalTime.MIN);
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}
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/**
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* 获取当天的23:59:59
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*
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* @return
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*/
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public static LocalDateTime getDayEnd(LocalDateTime time) {
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return time.with(LocalTime.MAX);
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}
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/**
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* 获取指定日期字符串的LocalDateTime
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* String转LocalDateTime
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*
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* @param time 日期字符串
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* @return 结果LocalDateTime
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*/
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public static LocalDateTime getLocalDateTime(String time) {
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DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("yyyy-MM-dd", Locale.CHINA);
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LocalDate localDate = LocalDate.parse(time, dateTimeFormatter);
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Date date = Date.from(localDate.atStartOfDay(ZoneOffset.ofHours(8)).toInstant());
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return date.toInstant().atZone(ZoneOffset.ofHours(8)).toLocalDateTime();
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}
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/**
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* 指定日期所在月的第一天/最后一天时间
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*
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* @return 结果集
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*/
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public static Map<String, Date> getMonthDate(Date date) {
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Map<String, Date> map = new HashMap<>(2);
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Calendar cal = Calendar.getInstance();
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//设置指定日期
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cal.setTime(date);
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//获取当月第一天日期
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// int first = cal.getActualMinimum(Calendar.DAY_OF_MONTH);
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// cal.set(Calendar.DAY_OF_MONTH, first);
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// Date firstDay = cal.getTime();
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// map.put("first", firstDay);
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//获取当月最后一天日期
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int last = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
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cal.set(Calendar.DAY_OF_MONTH, last);
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Date lastDay = cal.getTime();
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map.put("last", lastDay);
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return map;
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}
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/**
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* Date转为LocalDateTime
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*
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* @param date 日期
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* @return LocalDateTime
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*/
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public static LocalDateTime dateToLocalDateTime(Date date) {
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Instant instant = date.toInstant();
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ZoneId zoneId = ZoneId.systemDefault();
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return instant.atZone(zoneId).toLocalDateTime();
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}
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}
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